 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.ui.views.markers.internal;

 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IMarker;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.jface.viewers.ISelectionProvider;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.ui.IEditorPart;
 import org.eclipse.ui.IWorkbenchPart;
 import org.eclipse.ui.ide.IDE;
 import org.eclipse.ui.ide.ResourceUtil;

 /**
  * ActionRevealMarker is the action for opening the editor on
  * a marker.
  *
  */
 public class ActionRevealMarker extends MarkerSelectionProviderAction {

     protected IWorkbenchPart part;

     /**
      * Create a new instance of the receiver.
      * @param part
      * @param provider
      */
     public ActionRevealMarker(IWorkbenchPart part, ISelectionProvider provider) {
         super(provider, Util.EMPTY_STRING);
         this.part = part;
     }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.jface.action.Action#run()
      */
     public void run() {
         
         IEditorPart editor = part.getSite().getPage().getActiveEditor();
         if (editor == null) {
             return;
         }
         IFile file = ResourceUtil.getFile(editor.getEditorInput());
         if (file != null) {
             IMarker marker = getSelectedMarker();
             if (marker.getResource().equals(file)) {
                 try {
                     IDE.openEditor(part.getSite().getPage(),
                             marker, false);
                 } catch (CoreException e) {
                 }
             }
         }
     }

     /* (non-Javadoc)
      * @see org.eclipse.ui.actions.SelectionProviderAction#selectionChanged(org.eclipse.jface.viewers.IStructuredSelection)
      */
     public void selectionChanged(IStructuredSelection selection) {
         setEnabled(Util.isSingleConcreteSelection(selection));
     }
 }

